Applicable Mathematics/Univariate Data

univarite statistics

a basic introduction (not complete)

$\Sigma$: "sigma" which means "sum of"

example:

$\sum _{i=2}^{4}1\times i$

(considering numbers 1 to 10)

sum of numbers from 2 to 4 by factor of 1 ($1\times i$)

4

Σ 1x_i = 2 + 3 + 4 = 9

i=2

the mean ($X$) = sum of all scores / number of scores = Σx / n

also:

standard deviation (§)

variance (v)(§²)

box plots

-quartiles

stem plots

class limits, boundaries, classmarks

transformations on data sets

Standard scores (z)